The coordinated control system of large-capacity thermal power unit is a complicated multi-variable

non-linear

and close coupling object.The problems existing at present in coordinated control system are slow load response

and large presure fluctuation of the main steam etc..Based on the properties of thermal power units

optimization has been carried out in two aspects

namely dynamic coal quantity and sliding pressure settings.After optimization

the dynamic and static quality of units have been ensured

emulation and practical application show that the effectiveness of the said optimization method is good.